12:25 p.m. Update: D.C. police say the southbound lanes have reopened, but be alert for delays due to rubbernecking.

11:45 A.M. Update: D.C police report that 295 southbound is closed at Laboratory Road due to an overturned dump truck. Traffic is being rerouted to the access road.

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10:04 A.M. Update:

Fairfax County Parkway southbound is completely closed at I-66. Two previously closed northbound lanes near I-66 have reopened. All ramps from I-66 to the parkway are closed.

8:39 A.M. Update:

An accident on northbound I-295 at Malcolm X Avenue in the District has closed the right lane and right shoulder.

8:35 A.M. Update:

A tractor trailer accident on the northbound Fairfax County Parkway near the ramp to I-66 West is blocking the northbound lanes and left shoulder.

A disabled vehicle on the outer loop of the Beltway at the Leesburg Pike is blocking the right lane. [Update: The vehicle has been moved to the right shoulder.]

Eastbound I-66 is typically snarled before the Beltway. The inner loop is similarly jammed as you approach I-66.

Georgia Avenue is also a slow and congested mess heading south towards the Beltway.

The northbound Douglass Bridge is crawling right now, so if you can take the Sousa Bridge instead, head that way because it’s less of a slog.

8:20 A.M. Update:

The accident on the outer loop of the Beltway between Braddock Road and the Little River Turnpike continues to block the right shoulder.

8:05 A.M. Update:

The accident on the outer loop of the Beltway between Braddock Road and the Little River Turnpike is now just blocking the right shoulder. The right two lanes have reopened.

The accident on the inner loop before Pennsylvania Avenue has been cleared and all lanes reopened.

8 A.M. Update:

An accident on the inner loop before Pennsylvania Avenue is blocking one lane and one of the shoulders. It’s unknown if this is the same accident reported earlier, because this is not far from St. Barnabas Road, or if this is a separate incident. But the inner loop lane is blocked before Pennsylvania Avenue.

7:50 A.M. Update:

An accident on the inner loop before St. Barnabas Road is blocking one of the shoulders.

7:40 A.M. Update:

An accident on the outer loop of the Beltway between Braddock Road and the Little River Turnpike is blocking the right two lanes and the right shoulder.

7:25 A.M. Update:

A disabled vehicle on eastbound I-66 before Chain Bridge Road is blocking the right shoulder.

7:15 A.M. Update:

MARC train 878 has taken on passengers from disabled train 874. As a result, train 878 is going to be very crowded this morning. This train is also about 10 minutes behind schedule. Again, Metro will honor MARC tickets.

7 A.M. Update:

The accident on I-270 South at the 270 Spur has been cleared from the shoulder.

I-95 North is delayed before the Fairfax County Parkway and, to the south, in Occoquan.

I-395 North is already a bit slow at the 14th Street Bridge.

6:40 A.M. Update:

The accident on I-270 South at the 270 Spur has been cleared from the southbound lane and is just blocking one of the shoulders.

The accident on I-95 North at the Springfield Interchange has been cleared.

6:25 A.M. Update:

MARC Brunswick Line train 874 has been terminated due to mechanical issues, according to the Maryland Transit Administration. Train 878 is the next available train and it will take on passengers from train 874. Metro will honor MARC tickets.

An accident on I-270 South at the 270 Spur is blocking one southbound lane and one of the shoulders.

An accident on eastbound I-66 before George Mason Drive is blocking the right shoulder.

An accident on I-95 North at the Springfield Interchange is blocking the left shoulder.

Original Post:

Good morning, commuters! We’ll be keeping an eye on the roads and rails this morning, reporting any delays or issues — and we will need your help. If you hear about any congestion, delays, problems or anything at all, tell us in the comments section below or by tweeting @drgridlock.

The bitter cold we felt on Sunday lingers as the work week begins, according to the Capital Weather Gang. But it will warm up and get above 40 this afternoon, so that’s something to anticipate.

So far:

— A disabled vehicle on the outer loop of the Beltway at the Little River Turnpike is blocking the right shoulder.

— A disabled vehicle on I-95 North before Occoquan is blocking the right shoulder.

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Mark Berman is a reporter on the National staff. He runs Post Nation, a destination for breaking news and developing stories from around the country.

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Comments our editors find particularly useful or relevant are displayed in Top Comments, as are comments by users with these badges: . Replies to those posts appear here, as well as posts by staff writers.